Abstract
Wind tunnel experiments, flow visualization tests as well as analytical modeling are conducted to investigate the influence of wind speed and its direction on the ventilation capacity of one-sided wind-catcher models. These are wind-catchers with flat, inclined and curved roofs which are in common use in central part of Iran for passive cooling. Induced airflow rate and pressure coefficients over all the internal surfaces of the wind-catchers’ channels are measured. Using measured pressure coefficients and analytical modeling, natural ventilation efficiencies of wind-catchers are calculated and compared with the experimental measurements. It is seen that for all wind directions, the semi-analytical prediction of ventilation efficiencies has a good agreement with the experimental results.Based on the measured quantities, it is shown that the flow pattern, the internal pressure field and induced airflow rate inside the wind-catchers are strongly influenced by the geometry of wind-catcher's roof and the approaching wind direction. Measured airflow rate inside the wind-catcher revealed that for zero air incident angle, the one with curved roof is capable of capturing higher airflow while for high values of air incident angles, the inclined roof wind-catcher is more suitable and less sensitive to changing the outdoor wind direction.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
